I put 4 cups old fashioned oats and about 4 cups water into a Tupperware container, then add about 1 C milled flax seed, and maybe some nuts and/or raisins or other dried fruits. Mix well and let it sit in the fridger over night for a big supply of overnight oats. It's good in the fridge for about 5 days. In the morning take a scoop of it, add a little milk and heat it up; add some maple syrup. Keeps you very regular.